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use std::io;
use std::io::BufRead;
pub fn main<T: BufRead>(reader: T) -> io::Result<(String, String)> {
#[derive(PartialEq, Eq)]
struct Entry {
nch: i32,
nmeta: i32,
}
let mut stk = vec![Entry {nch: 1, nmeta: 0}];
let mut total_meta = 0;
let mut vals: Vec<Vec<i32>> = vec![vec![]];
let mut current_val = 0;
for num in reader.lines().next().unwrap().unwrap().split(' ').map(|s| s.parse::<i32>().unwrap()) {
// Yay non-lexical lifetimes!
let l = stk.last_mut().unwrap();
if l.nmeta == -1 {
// println!("read nmeta {}", num);
l.nmeta = num;
continue;
}
if l.nmeta == 0 && l.nch == 0 {
loop {
// println!("pop");
stk.pop();
// println!(" node value {}", current_val);
vals.pop();
vals.last_mut().unwrap().push(current_val);
current_val = 0;
let l = stk.last().unwrap();
if l.nmeta != 0 || l.nch != 0 { break; }
}
}
let l = stk.last_mut().unwrap();
if l.nch == 0 {
// println!("+meta {}", num);
total_meta += num;
if vals.last().unwrap().len() == 0 {
// println!(" add value");
current_val += num;
} else if 1 <= num && num <= vals.last().unwrap().len() as i32 {
// println!(" add child value {}", vals.last().unwrap()[num as usize - 1]);
current_val += vals.last().unwrap()[num as usize - 1];
}
l.nmeta -= 1;
} else {
// println!("read nch {}", num);
l.nch -= 1;
stk.push(Entry {nch: num, nmeta: -1});
vals.push(vec![]);
}
}
let part1 = total_meta.to_string();
let part2 = current_val.to_string();
Ok((part1, part2))
}
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